Beckett Corporation 20-Gallon Barrel Liner 20-gallon liner; ideal for use as an inner for a wine barrel to line and convert into a fountain it is suitable for both above ground and in ground installation It's smaller size and design does not require underlayment Built in plant ledges; flat bottom for stable pump or plant placement High grade, flexible plastic is safe for fish and plants; Material is UV stable 15-year limited manufacturer's warranty